Reversing mechanism



Feb. 3. 1925. v 1,525,207

C. M. SHAN K S REVERSIN-G MECHANISM Filed March 4, 192.4

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CECIL ML SHANKS, OF GREENEVILLE, TENNESSEE.-

REVERSING MECHANISIJL Application filed March 4,

To all whom it may concern:

it known that I, canon, M. SHAnns, a citizen of the United tdtat'es, residing at Greeneville, in the county of Greene and State of Tennessee, have inventedcertain new and useful Improvements in Reversing Mechanism, of which the following is a specification.

The present invention relates'to areversing mechanism for belt'and like driven mechanism. The device is primarily designed for use in driving the fan belt of an auto mobile having for its prime object to provide a structure capable of being readily operated for reversing motion of the fan whereby it may be rotated in-an opposite direction so as to force heated air from the engine through the radiator in co-id weather for the purpose of preventing the water in the radiator and the coolingsystem of the en ine from becoming frozen.

A still further object of the invention is to provide a device of this nature which may be easily manipulated for changing the motion of the fan or device, one which is reliable, comparatively inexpensive to construct, durable, and well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description progresses, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a side elevation of a mechanism embodying my invention, portions being broken away and shown in section,

Figure 2 is a similar View showing the parts in a different position, and

Figure 3 is a section taken transversely through the device substantially on the line 33 of Figure 2 looking in the direction of the arrows.

Referring to the drawing in detail it will be seen that 1 designates a suitabie support which preferably terminates at its upper end in a block 2 having a threaded opening therein for receiving a shaft 3 provided with threads at both ends. A casing indicated generally by the letter A is mounted on the shaft 3 and includes the drum 4 having a closed end 5 and an open end 6. The closed end 5 is provided on its inside with a beveled gear 7 while the interior of the open end 6 1924. Serial No. 696,868.

is provided with they annular series of-icog teeth 8. A stub shaft or bolt 9 pierces the 'shaft i transversely intermediate its ends of the casing by any suitable prime mover' the bevel gear 10 will be rotated. I

The objects or member 12 to be rotated such as a fan, is provided with'the inwardly projecting. hub portion 13 having an annular series of cogteeth 14.011 its rounded-face and a bevel gear 15 formed onitsinner fiat face. This hub 13 is rotatably mounted on the shaft 3 and the gear 15 is meshable with the gear 10 and the teeth 14.- are meshable with the teeth 8. A coil spring 16 disposed. on the shaft 3 within the casing. A impinges against the, bolt 9' and against. the hub 3, the gear 15 being recessed at 17 for forming a pocket'to receive this spring, whereby the hub 13 is normally positioned so that the teeth 14 mesh with teeth 8 and bevel gear 15' is out of mesh with bevel gear 10. A nut 20 is threaded on the end of the shaft 3 as is also a block nut 21. By screwing the nut 20 inwardly against the hub 13 it will be seen that it may be moved to the left and take the position shown in Figure 1. By unscrewing this nut the parts may be disposed as shown in Figure 2. When the parts are positioned as shown in Figure 2 the fan or other like member 12 rotates in the same direction with the casing A since the teeth 14 and 8 are in mesh with one another whereas in Figure 1 the member 12 rotates in an opposite direction from the casing A and thus the member or fan is said to be reversed.

Although I have described my invention with a certain degree of particularity, it is to be understood that numerous changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or. scope of the invention as hereinafter claimed.

Having thus described my invention what I claim as new is:

1. In a mechanism of the class described, a shaft, a casing rotatable on the shaft, a member rotatable on the shaft, means in the casing for rotating the member with the casing, other means in the casing for rotating the member in an opposite direction from said casing, and means for moving the member in engagement with either of the above two mentioned means.

2. In a mechanism of the class described, a casing in the form of a drum having aclosed end and an open end the open end of said casing provided with an interior annular series of teeth, the closed end provided with a beveled gear on its inner face, a shaft on which said bevel gear is rotatable, a bolt passing transversely through the shaft within the casing, a bevel gear rotatable on said bolt in constant mesh with the first mentioned bevel gear, a member including a hub rotatable on the shaft and provided with an annular series of teeth meshable with the first mentioned annular series of teeth and with a bevel gear meshable with the second mentioned bevel gear, a spring on the shaft impinging against the bolt and the hub normally holding the second bevel gear and third bevel gear out of mesh and the two annular series of teeth in mesh, and means for moving the hub so as to place the two annular series of teeth out of mesh and the second and third mentioned gears in mesh.

3. In a mechanism of the class described, a shaft, a casing rotatable on the shaft and provided with a clutch element and a gear element, a member rotatable on the shaft and provided with a clutch element and a gear element, a spring normally holding the member with its clutch element in engage ment with the clutch element of the casing, a gear supported within the casing and meshing with its gear element, and means for moving the member so as to disengage the clutch elements and mesh its gear element with the gear. 1

4. In a mechanism of the class described, a shaft, a driving member and a driven member rotatable on the shaft, means interposed between the members for rotating the driven member by and in an opposite diree tion from the driving member, means interposed between the members for rotating the driven member by and in the same direction with the driving member, one of said members being slidably mounted on the shaft, and means for sliding the last mentioned member to bring into operation either of the two aforementioned means.

In testimony whereof I affix my signature in presence of two witnesses.

' CECIL M. SHANKS. .Vitnesses A. B. GILLAND, CARL Hams. 

